Category: P

The property of a crystal that produces different colors when light passes through it at different angles.  

A genus of microsporidia that usually parasitizes fish.  

The ability of a gene to have many effects.  

The feeling of being delighted or pleased.  

Involvement in a sport, amusement, or any form of recreation, especially an activity other than that in which one is usually engaged as an occupation. From the medical standpoint, it is important that the recreational activity be enjoyable and that participation in it be safe and satisfactory.  

A broad, thin, platelike layer of muscle that extends from the fascia of both sides of the neck to the jaw and muscles around the mouth. It acts to wrinkle the skin of the neck and depress the jaw.  

Having a very wide nose in proportion to length.  

Shortness of breath, dyspnea, only when the patient is upright or seated.  

Having a very broad face, with a nasomalar index of less than 107.5.  

Having an eye with a shortened anteroposterior diameter, which results in hyperopia.